After receive a bunch of pictures of the actual prototype PCBs, I have decided to go back and look at some of the prototypes that didn't get good articles, as my sleuthing skills have increased. First up, Super Buster Bros, which is actually a prototype between two released revisions:

I updated the War of the Gems prototype. Originally, it looked like the graphics were all messed up, but this was a result of a bug in zsnes. If you play the prototype in Higan or bsnes, the graphics are fine.

Wow, it has been over 10 years since I released all of these prototypes. Anyways, looking through my emails, I realized there was one thing I didn't release, a fragment of a prototype of Demon's Crest. It is now on SNES Central!